Carton



J. W. LEARY CARTON Filed July 8, 1925 or bent over along the lines 13 and 14, as indicated at 21 and 22 in Fig. 2. Thus the space 23 in Fig. 1 bounded by the lines 11 and 12, on the one hand, and by the lines 13 and 14 on the other, forms the bottom 24 ofthe carton.

When the middle portions 18' and 19 of the lateral sidesof the sheet 6 are turned down to constitute the lirst folds of the ends of the carton, the lmaterial occupied by the spaces 26 on each side of the middle portions 18 and 19 is'alsoturned down, as indicated at 27 in Figs. 2 and 4. The spaces,

26 are bounded by the slits 15, the lines 11 and`12, and the diagonal lines 28 extending from the inner ends 16 ofthe slits 15 to the points where'the lines y11 and 12 cross the lines 13 and 14. The folding over ofl the material occupying the spaces 18 and 19 and the spaces 26 leaves theblank in the condition shown in Fig. 2. It will be observed that the bottom end (shown at'the top in Figs. 2 and 4) of each projecting lateral end of the sides9 and 10 is determined by a slit and a diagonal line 28, the transverse portion 29 of the lower edge being formed by a slit 15 and the oblique portion 30 be ing formedalon'g a. diagonal line 28.

' down 0n top of the folds 31 to form the fol dsv The third step in folding the blank 6 into a carton is to turn over or fold down.. the lateral projecting edges of one of the sides N9 and 10, as indicated at 31 in Fig. 4, in

which figure the front projectingedge of the side 9 is shown. folded down upon the first end fold 38. It will now be understood that the distance of the slits 15 from theV 'ifoldlines 11 and, 12 determines the distance from the transverse edges 29 of the folds 31 tothe bottom corner edges 21 and 22 of the carton; and that the distance between theV 35. YThe distance between the. Vslits 15 and the adjacent transverse fold lines 11 and 12,

in the form of carton shown in the drawings,

Vis so" proportionedV to the vdistancebetween the fold lines 11 and 12 that when'the lateral ends of the sides 9 and 10'of the carton are folded down one upon the other the free end 39 of the fold 35 overlaps the fold 31 as far as the point of junction 40 between the transverse portion 29 and the oblique portion 30 of the lower edge of the fold 31. Thus the lin-es 21, 29 and 30 at the lower right hand corner in Fig. 5 define a regular trapezoi'd in which the end lines 3() are equal and slope"V The carton is now 1nv in opposite directions. the condition illustrated in Fig. 5, and is seen V'to bean open ended structure suitable for use in automatic filling/or packaging machines. f

' Before the lateral ends or edges of the side' Y V down parts 27 formed from the areas 26 are coated with glue, as indicated at 36 in Fig. 3. The glue covered parts 34- and 36 are folded down` against the folds 38 formed from the areas 18 and adhere thereto. 'Be Y fore the projecting lateralV edges or ends 33V n win @understood that by slitting the side edges of the blank 6 to form the transy verse )edges ofthe lower ends of the side edges or ends of the sides 9 and 10 to constitute the end folds 31 andv 35 of the carton,

`a larger area for the glue isl provided than in cartons yof this type as heretofore constructed, with the result thatv the folds at the lower corners of the carton arethereby made stronger. y edges of the blank 6 to provide the transverse bottom ends of the side folds of the carton Moreover by slitting the it is not necessary to overlap the folds 31 and y 35 as much as has formerly been the practice,

thereby effecting a saving of material. By reference to the lower portion of the right hand end of the iinished carton shown in Fig. 5, it will be seen that the folds produced asa result of making the slits 15 are neater jand more attractive than those formed v.by the old methods of folding the material withn outslittingv it. l Y

` Having thus describedthe invention what I claim asV new is 1. Avcarton comprising a structure substanvtiallyrectangular in cross-section-an'd having an open top, said structure being formed from a single sheet of materialffolded'upon itself once to constitute the bottom andthe side walls' of the carton, the distance between Y Vfolds of the carton, said slits being located outside the transverse fold lines andV being spaced therefrom.a-V distance substantially lequal. to the distance between the inner'ends of the slits'and the `longitudinal oldlinee Y of the outer end fold, a p'art of the bottom edge of the innei` fold and the lower.' edge of tlie end of the carton bound a regular trape- Zoid.

A 2. A carton comprising af structure open Yat its top and formed from asingle slieet of material folded upon itself once to'consti.- tutev the bottom and side Walls of the carton,

.the distancey between the-transverse lines boundingitlie bottom side. Walle deter mining the thickness of the ea1ton,'the side l, edges of the blank being provided with four transverse slits, two on each side, extendingV from the edgesof tlie blank inwardly and terminating short of. the longitudinal" fold lines of the end folds of' the carton, Said slits' being locatedy outside the transverseY `fold lines a kdistance Substantially equal to tbev distance between tlie ends'of the slits andthe longitudinal Jfold lines.

JAMES W. LEARY. 

